Abstract
In the present work, amorphous silica (SiO2) is prepared from agricultural waste (rice husks) as a sustainable source by acid leaching process followed with the calcination process. RH treated with 3N HCl, then burned at (500, 600, 700, and 800°C) for 4 hrs. The final product of silica was characterized by X-ray fluorescence (XRF), scanning electron microscopy (SEM), X-ray diffraction (XRD) analysis, and thermogravimetric analysis (TGA). The results by XRD and XRF indicate that the obtained white powder was amorphous silica at calcination temperature less than 700°C with a purity of 96.976% but at 800°C the purity was 96.983%. SEM and visual inspection analyses show that RHA morphologies with acid pre-treatment at 700°C and 800°C surfaces of un-leached rice husk have a greater degree of roughness than those that have been leached with dilute acids.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
